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[Discuss-gnuradio] Maximum number of DDCs?

From: Sascha Krissler
Subject: [Discuss-gnuradio] Maximum number of DDCs?
Date: Sat, 12 Dec 2009 11:37:04 +0000
User-agent: Mutt/


from a spectrum of 25Mhz (GSM-900) i would like to sample as
many 200khz bands as possible. Since the data rate of the usb
bus is only 8Mhz, i cannot sample all of this 25mhz wide band.
Still 8Mhz would be enough to transfer 40 distinct 200khz wide
bands, which are spread over the 25Mhz band. As far as i understand,
i would have to use 1 daughterboard, 1 ADC and 40 DDCs for this
to work. Is it possible to build an FPGA image that does that?
If not, is it possible on the USRP2?

Thanks for helping


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